<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>flask</title>
</head>
<body>
    <!-- <script>
        var data =prompt('输入数据!')
    </script> -->

    <form action="11">
        <input type="text"><br>
        <input type="submit" value="提交">
      </form>
</body>
</html>